Update data viz chapter

giswqs · Nov 15, 2023 · 96b9a5d · 96b9a5d
1 parent 53770ab
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diff --git a/book/duckdb/08_data_viz.ipynb b/book/duckdb/08_data_viz.ipynb
@@ -29,7 +29,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "Visualizing point data."
+    "## Visualizing point data"
    ]
   },
   {
@@ -94,7 +94,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "Visualizing polygon data."
+    "## Visualizing polygon data"
    ]
   },
   {
@@ -204,6 +204,36 @@
    "source": [
     "![legend](https://i.imgur.com/fxzHHFN.png)"
    ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Visualizing multiple layers"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import leafmap.deckgl as leafmap"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "m = leafmap.Map()\n",
+    "countries = 'https://open.gishub.org/data/duckdb/countries.geojson'\n",
+    "cities = 'https://open.gishub.org/data/duckdb/cities.geojson'\n",
+    "m.add_vector(countries, get_fill_color='blue', opacity=0.1)\n",
+    "m.add_vector(cities, get_radius=20000, get_fill_color='red', opacity=0.5)\n",
+    "m"
+   ]
   }
  ],
  "metadata": {

diff --git a/book/duckdb/08_data_viz.md b/book/duckdb/08_data_viz.md
@@ -21,7 +21,7 @@ kernelspec:
 import leafmap
 ```
 
-Visualizing point data.
+## Visualizing point data
 
 ```{code-cell} ipython3
 url = 'https://open.gishub.org/data/duckdb/cities.parquet'
@@ -46,7 +46,7 @@ Visualize the GeoDataFrame using [lonboard](https://github.com/developmentseed/l
 leafmap.view_vector(gdf, get_radius=20000, get_fill_color='blue')
 ```
 
-Visualizing polygon data.
+## Visualizing polygon data
 
 ```{code-cell} ipython3
 url = 'https://data.source.coop/giswqs/nwi/wetlands/DC_Wetlands.parquet'
@@ -99,3 +99,20 @@ leafmap.Legend(title="Wetland Type", legend_dict=color_map)
 ```
 
 ![legend](https://i.imgur.com/fxzHHFN.png)
+
++++
+
+## Visualizing multiple layers
+
+```{code-cell} ipython3
+import leafmap.deckgl as leafmap
+```
+
+```{code-cell} ipython3
+m = leafmap.Map()
+countries = 'https://open.gishub.org/data/duckdb/countries.geojson'
+cities = 'https://open.gishub.org/data/duckdb/cities.geojson'
+m.add_vector(countries, get_fill_color='blue', opacity=0.1)
+m.add_vector(cities, get_radius=20000, get_fill_color='red', opacity=0.5)
+m
+```